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dangina [55]
3 years ago
5

Oxygen decays to form nitrogen.

Chemistry
1 answer:
tatyana61 [14]3 years ago
7 0

Answer:

Radioactive isotopes ranging from 11O to 26O have also been characterized, all short-lived. The longest-lived radioisotope is 15O with a half-life of 122.24 seconds, while the shortest-lived isotope is 12O with a half-life of 580(30)×10−24 seconds (the half-life of the unbound 11O is still unknown).

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How many grams are in 4 moles of Calcium?
mixer [17]

Answer:

160.32 grams of Ca or 160 if rounded

Explanation:

Multiply moles of Ca by the conversion factor (molar mass of calcium) 40.08 g Ca/ 1 mol Ca, which then allows the cancelation of moles, leaving grams of Ca.

4 mol*40.08g/mol = 160.32 grams of Ca

please give thanks by clicking heart button :)

3 0
2 years ago
Read 2 more answers
PLEASE HELP
antiseptic1488 [7]
I’m pretty sure it’s D. Hope that helps! Correct me if I am wrong.
4 0
3 years ago
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labwork [276]
Option E, 2, 7, 4, 6. The type of reaction is combustion reaction, as oxygen is being reacted with C2H6 to form new compounds.

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8 0
3 years ago
an atom has 70 protons, 70 electrons, and 99 neutrons. what is the mass number? group of answer choices
Blizzard [7]

Answer:

169

Explanation:

protons+neutrons=atomic mass

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6 0
2 years ago
If you heat the air inside a rigid, sealed container until its Kelvin temperature doubles, the air pressure in the container wil
Pavel [41]

Answer:

No

Explanation:

If you heat the air inside a rigid, sealed container, then you are keeping it's mass and volume constant.

Then, Pressure of the container is directly proportional to the temperature.

Gay-Lussac's Law: This law states that the pressure of a given amount of gas when at constant volume is directly proportional to gas's absolute temperature in Kelvin.

So, if Kelvin temperature doubles, the air pressure in the container will also double.

The relationship between Celsius temperature and Kelvin temperature is not linear.

T_{K} = T_{C} + 273.15

If T_{K} becomes 2*T_{K}, then T_{C}  will become (2 * T_{K})- 273.15 .

i.e, it is increasing for sure, but doesn't double.

8 0
3 years ago
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